Everything is pretty much easy to understand no need to explain.
But ill try to explain most of the functions
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Save#
When you first open the app you will see (Save #) 
you will need to put in your save number so for exp if 
you have 4 saves on your hdd 1,2,3,4 this is great to go through any 
of your saves without any problems.So for 1 it's (00) for 2 (01) for 3 (02) 
for 4 (03).Most of you that start a new save will just put it has 00.
you don't need to do this if your just gonna open up your save right 
from your desktop:P

Dev kit Mode
If you click this you must have a dev kit lol.What this will do is 
(when clicked) you will be able to load your save from your dev and hack it
and reload title screen and bam this is by far the most fastest method 
for hacking saves.The other thing is if your gonna use FTP mode and USB 
and DEV you will need to also put in the number of your save in the (save#).

When your save is opened just goto tools and click on what you want like 
items hit max and save same thing with monsters etc.
If you want to get all fragments and what not goto the 
historia crux in the app.This will give you all frags,frag skills etc,
make sure you atleast play the game just once so you don't spoil 
anything for yourself:P

Memory Editor
Yes you read right a memory editor,when you click on dev mode or 
ftp mode we give you a option to put your ip/profile in there.
after that just hit max and poke.for lighting at the start of the 
game just max her stats and hit poke battle str nor mag and other 
stuff dont work on lighting besides hp:(

Anyway Poke battle will only hack stats in battle:P 
And feral slots are for monsters give it a whirl you might like it lol.

Also make sure if your ip changes or whatever to clear xbox config.
I also haven't tested on a jtag only dev kit lol. But nice to get 
some feed back:)Oh and to use memory editor and dev mode just make 
sure you have the xdevkit.dll inside the folder.google it:P
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Etro [PS3 ONLY]
Ok I haven't tested this (I dont have a ps3) 
But this should work regardless:P

Anyway the last thing is THIS WILL NOT MESS UP YOUR 
SAVE WE HAD FIXED THE GLITCH that was corrupting your 
stuff so you can now hack everything on episode 1 with out troubles etc.